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#include "stdafx.h"
#include "CLCDGfx.h"
#include "CLCDObject.h"
#include "CLCDBar.h"
//************************************************************************
// constructor
//************************************************************************
CLCDBar::CLCDBar()
{
m_iSliderSize = 0;
m_iPosition = 0;
m_iMin = 0;
m_iMax = 0;
m_iMode = MODE_SCROLLBAR;
m_iOrientation = DIRECTION_VERTICAL;
m_iAlignment = TOP;
}
//************************************************************************
// destructor
//************************************************************************
CLCDBar::~CLCDBar()
{
}
//************************************************************************
// initializes the bar
//************************************************************************
bool CLCDBar::Initialize()
{
return true;
}
//************************************************************************
// deinitializes the bar
//************************************************************************
bool CLCDBar::Shutdown()
{
return true;
}
//************************************************************************
// specifies the bar's mode ( scrollbar / progressbar )
//************************************************************************
void CLCDBar::SetMode(int iMode)
{
m_iMode = iMode;
}
//************************************************************************
// specifies the orientation of the bar
//************************************************************************
void CLCDBar::SetOrientation(int iOrientation)
{
m_iOrientation = iOrientation;
}
//************************************************************************
// scrolls down/right
//************************************************************************
bool CLCDBar::ScrollDown()
{
if(m_iPosition < m_iMax)
{
m_iPosition++;
return true;
}
return false;
}
//************************************************************************
// scrolls up/left
//************************************************************************
bool CLCDBar::ScrollUp()
{
if(m_iPosition > m_iMin)
{
m_iPosition--;
return true;
}
return false;
}
//************************************************************************
// scrolls to the specified position
//************************************************************************
bool CLCDBar::ScrollTo(int iPosition)
{
if(iPosition >= m_iMin && iPosition <= m_iMax)
{
m_iPosition = iPosition;
return true;
}
return false;
}
//************************************************************************
// sets the size of the slider
//************************************************************************
void CLCDBar::SetSliderSize(int iSize)
{
m_iSliderSize = iSize;
}
//************************************************************************
// sets the alignment of the scrollbar position
//************************************************************************
void CLCDBar::SetAlignment(int iAlignment)
{
m_iAlignment = iAlignment;
}
//************************************************************************
// updates the bar
//************************************************************************
bool CLCDBar::Update()
{
return true;
}
//************************************************************************
// specifies the bar's range
//************************************************************************
void CLCDBar::SetRange(int iMin, int iMax)
{
m_iMin = iMin;
m_iMax = iMax;
if(m_iPosition < m_iMin)
m_iPosition = m_iMin;
else if(m_iPosition > m_iMax )
m_iPosition = m_iMax;
}
//************************************************************************
// draws the bar
//************************************************************************
bool CLCDBar::Draw(CLCDGfx *pGfx)
{
if((m_iMode != MODE_SCROLLBAR || m_iSliderSize > 0) && m_iMax >= m_iMin)
{
// draw border
pGfx->DrawRect(0,0,GetWidth(),GetHeight());
// initialize variables
int iSize = (m_iMax - m_iMin)+1;
int iPosition = m_iPosition - m_iMin;
int iPixels = m_iOrientation == DIRECTION_VERTICAL?GetHeight():GetWidth();
int iFirst=0,iLast=0;
// generate scrollbar offsets
if(m_iMode == MODE_SCROLLBAR)
{
int iOffset = iPosition;
if(m_iSliderSize >= 2)
{
switch(m_iAlignment)
{
case CENTER:
iOffset -= (m_iSliderSize-1)/2;
break;
case BOTTOM:
iOffset -= (m_iSliderSize-1);
break;
case TOP:
break;
}
if(iOffset < 0)
iOffset = 0;
}
int iEnd = iOffset + m_iSliderSize;
if(iEnd > iSize)
iEnd = iSize;
iFirst = iPixels*((float)iOffset/(float)iSize);
iLast = iPixels*((float)iEnd/(float)iSize);
}
// generate progressbar offsets
else if(m_iMode == MODE_PROGRESSBAR)
{
iFirst = 1;
iLast = iPixels*((float)iPosition/(float)iSize);
}
// draw the bar
if(m_iOrientation == DIRECTION_VERTICAL)
pGfx->DrawFilledRect(1,iFirst,GetWidth()-1,iLast-iFirst);
else
pGfx->DrawFilledRect(iFirst,1,iLast-iFirst,GetHeight()-1);
}
return true;
}
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